.book_stack .list li:last-child{
    padding: 20px 30px 5px;
    border-bottom:none;
}

.book_stack .list li:last-child a{
    color: #8d8d8d;
    font-size: 1.24rem;
}
.book_stack .list li:last-child b{
    color: #c3c3c3;
}
/*书库*/
.book_stack{
    background: #fff;
    padding: 15px 0 ;
}

.book_stack h3{
    font-size: 1.24rem;
    text-align: center;
    padding: 10px 0 25px;
    color: #21a7ee;
    display: block;
    cursor: pointer;
}
.book_stack h3 b{
    display: inline-block;
    margin-left: 5px;
    background: url(../images/bookdown.png) no-repeat;
    background-size: contain;
    width:1.333rem ;
    height: 0.844rem;
}
.book_stack h3 .active{
    background: url(../images/bookup.png) no-repeat;
    background-size: contain;
}
.book_stack .left{
    /*width: 10%;*/
    margin-right: 2%;
    position: relative;
    top: 5px;
    font-size: 1.066rem;
    color: #434343;
}
.book_stack .right{
    width: 88%;
}
.book_stack .cats{
    display: none;
}
.book_stack .catsopen{
    display: block;
}
.book_stack .right a{
    display: inline-block;
    margin: 0 0.55rem 15px;
    padding: 3px 5px;
    -moz-border-radius: 3px;
    -webkit-border-radius: 3px;
    border-radius: 3px;
    font-size: 1.33rem;
}
.book_stack .right .active{
    background: #2aaaff;
    color: #fff;
}
.book_stack .list li{
    padding: 15px 0;
    border-top: 1px solid #f4f4f4;
    /*    border-bottom: 1px solid #f4f4f4; */
    overflow: hidden;
}
.book_stack .list h1{
    margin: 5px 0 10px;
    font-size: 1.244rem;
    color: #434343;
}
.book_stack .list h2{
    margin: 15px 0;
    font-size: 1rem;
}
.book_stack .list h2 .cat{
    color: #cba943;
    border-right:2px solid #e6e6e6;
    margin-right: 5px;
    padding-right: 5px;
}
.book_stack .list h1 b{
    font-size: 0.8rem;
    color: #aeaeae;
    position: relative;
    top: 2px;
}
.book_stack .list .lefts {
    display: inline-block;
    width: 61%;
}
.book_stack .list p{
    font-size:1rem ;
}
.book_stack .list p a{
    color: #8a8a8a;
}